织梦DEDECMS搜索结果页按频道模型显示不同模板的方法

<script language="javascript" type="text/javascript"> 
<!-- 
 function check(){ 
  if(document.formsearch.channeltype.value=="3") 
  document.formsearch.action="{dede:field name='phpurl'/}/search_images.php" 
  else 
  document.formsearch.action="{dede:field name='phpurl'/}/search.php" 
 } 
--> 
</script> 

<form  name="formsearch" action="" *****ubmit="check();"> 
        <div class="form"> 
           <input type="hidden" name="kwtype" value="0" /> 
           <input name="q" type="text" class="search-keyword" id="search-keyword"

 value="{dede:global name='keyword' function='RemoveXSS(@me)'/}" /> 
       <select name="channeltype" id="channeltype" > 
    <option value='1' selected='1'>新闻</option> 
        <option value='3'>软件</option> 
           </select> 
          <button type="submit" class="search-submit">搜索</button> 
        </div> 
   </form> 

<select name="channeltype" id="channeltype" > 
    <option value='1' selected='1'>新闻</option> 
    <option value='3'>软件</option> 
</select>